*{
    margin: 0;
    padding: 0;
}

a{
   text-decoration: none;
}

/* body{
    background-color: #ffffff;   
} */

.nav_left{
    /* border: 1px solid blue; */
}

.nav_right{
    float: right;
    /* border: 1px solid blue; */
    
}

.nav_left,.nav_left>img,.nav_left>span,.nav_left>ul,.nav_left li,.nav_right>ul,.nav_right li,.nav_left .search{
    float: left;
}

.nav_left>img{
    margin-left: 25px;
    width: 75px;
    height: 50px;
    margin-top: 10px;
}

.nav_left>span{   
    margin-left: 5px;
    font-size: 20px;
    color: #4537e2;
    font-weight: bold;
    line-height: 70px;
}

.nav_right li{
    margin-right: 30px;
    height: 70px;
    list-style: none;
    text-align: center;
}

#user{
    display: none;
    cursor: pointer;
    /* border: 1px solid red;  */
}

#user img{   
    width: 40px;
    height: 40px;
    margin-top: 15px;
    border-radius: 50%;
    
}

#userTab{
    display: none;
    /* border: 1px solid red;  */
    position: absolute;
    top: 70px;
    right: 20px;
    width: 250px;
    height: 200px;
    background-color: #fff;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 5px 16px 0px rgba(10, 24, 37, 0.2);
    z-index: 999;
    padding: 30px;
}

.userinfo{
    overflow: hidden;
}

.userfile img{
    float: left;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    cursor: pointer;
}

.userfile div{
    float: left;
    margin-left: 20px;
    margin-top: 10px;
}

.userfile div h5{
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 5px;
    cursor: pointer;
}

.userfile div span{
    font-size: 14px;
    color: gray;
    margin-right: 10px;
    cursor: pointer;
}

.userfunc{
    padding-top: 15px;
    width: 100%;
    /* border: 1px solid blue;  */
    overflow: hidden;
}

.userfunc a{
    /* border: 1px solid blue;  */
    background-color: #F8FAFC;
    color: #000;
    float: left;
    font-size: 15px;
    padding: 5px 25px;
    margin-right: 5px;
    margin-top: 5px;
    border-radius: 2px;
}

.userfunc a:hover{
    opacity: .8;
    background-color: #d8dae0;
}

.userCont .line{
    width: 100%;
    height: 1px;
    margin-top: 15px;
    background-color: #ddd;
}

.userCont>a{
    display: block;
    font-size: 12px;
    margin-top: 15px;
    color: gray;
}

.userCont>a:hover{
    color: rgb(75, 75, 75);
}

.nav_left li{
    height: 70px;
    list-style: none;
    text-align: center;
    margin-left: 20px;   
}

.nav_left a,.nav_right a{
    font-size: 16px;
    color: #485696; 
    line-height: 70px;
}

.nav_left a:hover,.nav_right a:hover{
    color: #685cf0;
}

.nav_left .search{
    position: relative;
    margin-left: 30px;   
    margin-top: 18px;   
    /* border: 1px solid red; */
}

.search input{   
    width: 240px;
    height: 35px;
    outline: none;
    border-radius: 5px;
    border: none;
    padding-left: 10px;
    background-color: rgb(238, 238, 238);
}

.icon_search{
    cursor: pointer;
    position: absolute;
    display: inline-block; 
    top: 10px;
    right: 10px;
    width: 15px;
    height: 15px;
    background-image: url(../img/icon/search.png);
    background-size: 15px 15px;
    background-position:  center center;
    background-repeat: no-repeat;
}

.home_header{
    width: 100%;
    height: 70px;
    position: fixed;
    z-index: 999;
    background-color: #ffffff;
    box-shadow: 0 4px 8px 0 rgba(11, 22, 34, 0.1);
}

.home_sidebar{
    width: 50px;
    top: 45%;
    right: 0;
    position: fixed;
    z-index: 999;
    background-color: #ffffff;
    box-shadow: 0 4px 12px 0 rgba(11, 22, 34, 0.1);
}

.home_sidebar>div{
    margin: 0 auto;
    width: 35px;
    height: 50px;
    position: relative;
    overflow: hidden;
    /* border: 1px solid red; */
}

.home_sidebar>div + div{
    border-top: 1px solid rgb(236, 236, 236);
}

.home_sidebar img{
    /* display: none; */
    width: 24px;
    height: 24px;
    margin-top: 13px;
    margin-left: 5px;
    cursor: pointer;
}

.home_sidebar span{
    display: none;
    /* border: 1px solid red; */
    margin-left: 5px;
    cursor: pointer;
    margin-top: 13px;
    color: rgb(99, 98, 98);
    line-height: 15px;
    width: 24px;
    font-size: 12px;
    position: absolute;
}

.home_main1{
    /* border: 1px solid saddlebrown; */
    padding-top: 100px;
    padding-bottom: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 8px 0 rgba(7, 17, 27, 0.06);
}

.home_banner{
    width: 1100px;
    height: 450px;
    margin: 0 auto;
    /* border: 1px solid rgb(113, 139, 19); */
    overflow: hidden;
    position: relative;
    z-index: 1;
    border-radius: 5px;
    
}

#poster{
    position: relative;
    width: 1100px;
    height: 450px;
    cursor: pointer;
}

#poster img{
    position: absolute;
    float: left;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: all .8s;
}

#poster .active{
    opacity: 1;
    z-index: 10;
}

.home_banner .arrow{
    position: absolute;
    top: calc(50% - (20px));
    font-size: 20px;
    width: 45px;
    height: 45px;
    display: inline-block;
    text-align: center;
    line-height: 43px;
    border-radius: 50%;
    background-color: rgb(71, 70, 71);
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    opacity: 0.5;
    display: none;
    transition: all .3s;
    z-index: 99;
}

.home_banner:hover .arrow{
    display: block;
}

.arrow_pre{
    left: 10px;
}

.arrow_next{
    right: 10px;
}

.home_banner .arrow:hover{
    opacity: 0.8;
}

.home_banner .dots{
    width: 100%;
    /* border: 1px solid red; */
    position: absolute;
    bottom: 0;
    z-index: 50;
    text-align: center;
}

.dots ul{
    list-style: none;
    display: inline-block;
    /* border: 1px solid blue; */
    padding-left: 10px;
    margin-bottom: 5px;
}

.dots li{
    float: left;
    width: 8px;
    height: 8px;
    background-color: rgb(74, 70, 97);
    opacity: 0.7;
    border: 1px solid #fff;
    margin-right: 10px;
    border-radius: 50%;
    cursor: pointer;
}

.dots .activedot{
    opacity: 1;
    background-color: #fff;
}

.home_zeroBasis,.home_workPromote{
    width: 1100px;
    margin: 100px auto;
    /* border: 1px solid rgb(19, 105, 139); */
}

.home-tit{
    width: 100%;
    text-align: center;
    font-size: 22px;
    font-weight: initial;
    color: #564fa1;    
}

.home-tit:hover{
    color: #7c72e2;
}

.home-desc{
    font-size: 14px;
    color: grey;
    font-weight: initial;
    width: 100%;
    margin-top: 10px;
    text-align: center;
}

.home_zeroBasis>div:first-child{
    width: 100%;
    /* border: 1px solid aqua; */
}

.zeroBasis,.workPromote{
    width: 100%;
    /* border: 1px solid rgb(12, 63, 63); */
    margin-top: 50px;
    overflow: hidden;
}

.zeroBasis{
    height: 80px;
}

.workPromote{
    padding-top: 10px;
}

.zeroBasis>a{    
    display: block;
    width: 206px;
    height: 57px;
    float: left;  
    /* border: 1px solid rgb(78, 106, 231); */
    /* overflow: hidden; */
    padding-top: 12px;
    background-color: #F3F5F6;
    border-radius: 5px;
    
}

.zeroBasis a i{
    background: url(../img/homePage/zerobasis.png) no-repeat;
    background-size: 100%;
    width: 45px;
    height: 45px;
    float: left;
    margin-left: 12px;
    margin-right: 10px;
}

.zeroBasis .i-web{
    background-position: center 0;
}

.zeroBasis .i-java{
    background-position: center -45px;
}

.zeroBasis .i-python{
    background-position: center -90px;
}

.zeroBasis .i-android{
    background-position: center -135px;
}

.zeroBasis .i-php{
    background-position: center -180px;
}

.zeroBasis .title{
    margin-top: 3px;
    font-weight: bold;
    letter-spacing: 0.5px;
    color: rgb(31, 31, 31);
}

.zeroBasis .describe{
    font-size: 12px;
    color: rgb(90, 87, 87);
    margin-top: 2px;
}

.home_workPromote>div:last-child>a{    
    display: block;
    width: 350px;
    height: 85px;
    float: left;  
    /* border: 1px solid rgb(78, 106, 231); */
}

.workPromote a img{
    width: 350px;
    height: 85px;
}

.zeroBasis>a:first-child{
    margin-left: 3px;
}

.workPromote>a:first-child,.newCourse_part1>a:first-child,.hotCourse_part1>a:first-child{
    margin-left: 0;
}

.zeroBasis>a{
    margin-left: 16px;
    transition: all .3s;
}

.zeroBasis>a:hover{
    box-shadow: 0px 3px 12px 2px rgba(11, 22, 34, 0.1);
}

.workPromote>a{
    margin-left: 25px;
    transition: all .3s;
}

.workPromote>a:hover{
    margin-top: -10px;
}

.home_main2,.home_main4{
    /* border: 1px solid saddlebrown; */
    background-color: #f8fafc;
    padding: 30px 0 30px;
    overflow: hidden;
}

.home_main3{
    /* border: 1px solid saddlebrown; */
    background-color: #ffffff;
    padding: 40px 0 40px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 8px 0 rgba(7, 17, 27, 0.06);
}

.home_newCourse,.home_hotCourse,.home_studyPath{
    width: 1100px;  
    margin: 60px auto;
    /* border: 1px solid rgb(42, 102, 126); */
    margin-bottom: 90px;
}

.newCourse_part1,.hotCourse_part1{
    width: 1100px;
    overflow: hidden;
    margin-top: 60px;
    /* border: 1px solid rgb(30, 57, 175); */
    padding-top: 10px;
}

.newCourse_part1>a,.hotCourse_part1>a{
    float: left;
    width: 250px;
    height: 215px;
    /* border: 1px solid rgb(30, 57, 175); */
    margin-left: 25px;
    position: relative;
    border-radius: 5px;
    transition: all .3s;
    padding: 3px;
}

.newCourse_part1>a:hover,.hotCourse_part1>a:hover{
    margin-top: -10px;
    background-color: #ffffff;
    box-shadow: 0 3px 5px 2px #d6e9e8;
}

.newcourse_bottom,.hotcourse_bottom{
    width: 250px;
    position: absolute;
    bottom: 0;
}

.newcourse_bottom>div span,.hotcourse_bottom>div span{
    color: grey;
}

.newcourse_bottom>div>span:last-child,.hotcourse_bottom>div>span:last-child{
    float: right;
    margin-right: 15px;
}

.newcourse_bottom>span,.hotcourse_bottom>span{
    float: left;
    color: red;
    font-weight: bold;
}

.newCourse_part1 a>img,.hotCourse_part1 a>img{
    width: 250px;
    height: 130px;
    border-radius: 5px;
}

.newCourse_part1 a span,.hotCourse_part1 a span{
    font-size: 12px;
}

.newCourse_part1 a>h4,.hotCourse_part1 a>h4{
    color: #2214c4;
}

.home_hotCourse .hp1{
    margin-top: 20px;
}

.viewers{
    margin-left: 10px;
}

.new-viewer{
    display: inline-block;   
    width: 10px;
    height: 10px;
    background-image: url(../img/icon/icon_viewer.png);
    background-size: 10px 10px;
    background-position:  center center;
    background-repeat: no-repeat;
}

.studyPath{
    /* border: 1px solid rgb(255, 174, 0); */
    /* overflow: hidden; */
    margin-top: 10px;
}

.sp_tab{
    /* border: 1px solid red; */
    text-align: center;
    margin-top: 50px;
}

.sp_tab ul{
    display: inline-block;
    overflow: hidden;
    list-style: none;
}

.sp_tab>ul>li{
    width: 100px;
    height: 30px;
    cursor: pointer;
    border: 1px solid rgb(109, 128, 235);
    float: left;
    margin-left: 30px;
    line-height: 28px;
    border-radius: 5px;
    color: rgb(109, 128, 235);
}

.sp_tab .selected{
    color: #fff;
    background-color: rgb(109, 128, 235);
}

.sp_tab>ul>li:first-child{
    margin-left: 0;
}

.home_studyPath>div:first-child{
    width: 1100px;
    /* border: 1px solid red; */
}

.studyPath_part1,.studyPath_part2{
    overflow: hidden;
    /* border: 1px solid green;  */
    margin-top: 20px;   
    padding: 10px 5px;
}

.studyPath_part1>a,.studyPath_part2>a{
    float: left;
    width: 535px;
    height: 170px; 
    transition: all .3s;
    /* border: 1px solid gray; */
    /* overflow: hidden; */
}

.studyPath a:hover{
    border-radius: 8px;
    box-shadow: 0px 5px 5px 0px rgb(228, 228, 228);  
}

.studyPath_part1 img,.studyPath_part2 img{
    width: 135px;
    height: 135px;
    float: left;
    border-radius: 5px;
    margin: 25px 10px; 
    transition: all .3s;
}

.path-msg{
    margin-left: 5px;
    width: 370px;
    float: left;
    margin-top: 30px;  
    /* border: 1px solid red; */
}

.path-msg h4{ 
    font-size: 17px;
    color: rgb(31, 31, 31);
}

.path-msg p{ 
    font-size: 14px;
    color: gray;
    margin-top: 8px;
    line-height: 20px;
}

.path-msg div{
    margin-top: 20px;
    color: gray;
    font-size: 12px;
}

.path-msg .path-col{
    margin-left: 50px;
}

.path-collect{
    display: inline-block;   
    width: 10px;
    height: 10px;
    background-image: url(../img/icon/collect.png);
    background-size: 10px 10px;
    background-position:  center center;
    background-repeat: no-repeat;
}

.studyPath_part1>:last-child,.studyPath_part2>:last-child{
    float: right;
}

.home_main5{
    background-color: #516ac7;
    padding: 80px 0;
}

.consult{
    width: 1100px;
    /* height: 400px; */
    margin: 0 auto;
    /* border: 1px solid rebeccapurple; */
}

.home_main5 .cs{
    color: #fff;
}

.cs_cont{
    width: 100%;
    /* border: 1px solid red; */
    margin-top: 50px;
    overflow: hidden;
}

.cs_part{
    float: left;
    width: 350px;
    /* height: 400px; */
    background-color: #fff;
    margin-left: 25px;
    border-radius: 5px;
    padding-top: 10px;
    padding-bottom: 60px;
}

.cs_part h4{
    margin-left: 15px;
    font-weight: normal;
}

.cs_part img{
    width: 35px;
    height: 35px;
    margin-left: 15px;
}

.cs_cont>div:first-child{
    margin-left: 0;
}

.cs_cont .more{
    font-size: 13px;
    color: #ddd;
    float: right;
    margin-right: 10px;
    margin-top: 10px;
}

.cs_cont .more:hover{
    color: #fff;
}

.cs_link{
    margin-top: 25px;
    list-style: none;
}

.cs_link li{
    margin-top: 20px;
    margin-left:  30px;
    font-size: 14px;   
}

.cs_link a{
    color: rgb(36, 36, 36);
}

.cs_link a:hover{
    color: blueviolet;
}

footer>div{    
    width: 1100px;
    overflow: hidden;
    margin: 0 auto;
    padding-top: 50px;
}

.footer_left{
    width: 400px;
    float: left;  
    /* border: 1px solid green; */
    margin-left: 110px;
    /* padding-left: 50px;
    padding-right: 50px; */
}

.footer_left>p{
    /* width: 350px; */
    font-size: 11px;
    float: right;
    margin-top: 25px;
    text-indent: 22px;
    line-height: 18px;
    color: #8492A6;
     /* border: 1px solid green; */
}

.footer_right{
    /* width: 380px; */
    float: left;
    /* border: 1px solid green; */
    margin-left: 150px;
    /* padding-left: 130px;
    padding-right: 100px; */
}

.footer_right>div{
    float: right;
    text-align: center;
}

.footer_right>div:nth-child(1),.footer_right>div:nth-child(2){
    margin-left: 80px;
    /* border: 1px solid green; */
}

.footer_right h6{
    /* width: 55px; */
    font-size: 13px;
    color: rebeccapurple;
    padding-bottom: 5px;
    border-bottom: 1px solid rgb(130, 89, 241);
}

.footer_right ul{
    list-style: none; 
    padding-top: 5px;
}

.footer_right li{
    margin-top: 5px;
}

.footer_right a{
    font-size: 12px;
    color: #8492A6; 
}

.footer_right a:hover{
    color: rgb(71, 45, 145); 
}

.power{
    width: 100%;
    height: 20px;   
    font-weight: bold;
    float: left;   
    font-size: 12px; 
    text-align: center;
    color: rebeccapurple;
    padding-top: 30px;
}

.power>a:hover{
    color: #685cf0;   
}
